ImageSwitcher switcher;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// 创建一个List对象，List对象的元素是Map
List<Map<String, Object>> listItems =
new ArrayList<Map<String, Object>>();
for (int i = 0; i < imageIds.length; i++)
{
Map<String, Object> listItem = new HashMap<String, Object>();
listItem.put("image", imageIds[i]);
listItems.add(listItem);
}
// 获取显示图片的ImageSwitcher
switcher = (ImageSwitcher)
findViewById(R.id.switcher);
// 为ImageSwitcher设置图片切换的动画效果
switcher.setFactory(new ViewSwitcher.ViewFactory()
{
@Override
public View makeView()
{
// 创建ImageView对象
ImageView imageView = new ImageView(MainActivity.this);
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
imageView.setLayoutParams(new ImageSwitcher.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
// 返回ImageView对象
return imageView;
}
});
// 创建一个SimpleAdapter
SimpleAdapter simpleAdapter = new SimpleAdapter(this,
listItems
// 使用/layout/cell.xml文件作为界面布局
, R.layout.cell, new String[]{"image"},
new int[] { R.id.image1 });
GridView grid = (GridView) findViewById(R.id.grid01);
// 为GridView设置Adapter
grid.setAdapter(simpleAdapter);
// 添加列表项被选中的监听器
grid.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
{
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id)
{
// 显示当前被选中的图片
switcher.setImageResource(imageIds[position]);
}
@Override
public void onNothingSelected(AdapterView<?> parent)
{
}
});
// 添加列表项被单击的监听器
grid.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id)
{
// 显示被单击的图片
switcher.setImageResource(imageIds[position]);
}
});
}
}